Piston-repairing machine



Mt EQROGNESS4 PIASTONl R'EPAIRING MACHINE 'Filed June, 1922 -T all whom t may con-cern:

Patented Oct. 14, 1924. v

u Ni'rso STATES MARTIN E. Roeivnssos oaTLnY, soUTII DAKOTA'.

rIs'roN-REPAIRING MACHINE.

Application filed June 5,

Be it known that I, MARTIN F. ltocNnss, a citizen of the United States, residing Ortlev, in the county of Roberts and State yof South Dakota, have invented new and useful Improvements in Piston-Repairing Machines, of which the following is a speciication. Y

This invention relates toa machine for operation' on pistons and has for its primary object the construction of a machine that will more readily remove and replace bushings.

An object of the invention'is to combine in a single machine parts for removing bush ings, replacing same or clamping a piston in position to be readily acted up'oii for 'replac ing piston i'ings or similar operations.

Another object of the invention is to provide means for more effective removing and replacing bushings thereby preventing marring, or replacing of parts.

A feature of the invention is the novel manner of mounting the standard so that Y ily removed.

the power exerting `device may be thrown yto either of two positions for. performing either operation.

With these and other objects iii view the invention. will be better understood from the following detailed descriptionand taken iii connection with the accompanying drawing wherein: y

Fig. 1 is a sectional View of my improved machine.

Fig. 2 is a topplan view.

Fig. 3 is a detail view of one of the tools.

Fig. -1 is a side elevation of the cap.

Again referring to the drawing illustrating one of the many constructions of my invention the numeral 1 designates a table of any suitable construction having a piston'receiving seat 2 that connects with a passage l directly over the drawer 1 so that as ,the bushings are removed they will be deposited in vthe drawer from which they may be readan extension 5 having -a hole 6 that is partly countersunk indicated at 7 so that thel bearing of the piston will lit snugly therein and assure the aligning of the bearing hole with .the hole 6 so that the bushing maybe readily and accurately inserted. A standardV S is provided with a stub shaft 9 rotatably supported by the table and provided with a threaded shank 10 upon vwhich is mounted :i nut 11 that clamps against the table. A pin The Ytable is provided with 1922. Serial No. 565,847.

12 is passed through the table and the shaftv i to assure accurate positioning of lthe standardkin either'of lits twopositicns. .A feed screw 13 is 'mounted in the armflafproject iiigfrom the standard` VThe upper end ofthe feed screw is connected to the hand-le 1.

while the'lower end is provided with asocke;

k16 that'is adapted to have interchangeable connection with my impro-ved tools.` Each tool `is inthe form of a'cylindrical bar 17 having a reduced cylindrical lug 18 for 'interchangeable connection with" the Vsocket 1G. Inv Figure 1 it willbeA noted' that the bar 17 used for inserting the bushing has 'cylindrical extension 19v fitting within the bushing. The bar .17 used to remove the bushings is provided with a luglS hereto fore described butthe lower end is arranged upon the bushing.y Itwill be noted that thisl tool operates in a manner to assure proper movement of the tool in removing a bushing Y as same 1s properly guided through the bearing'.

. For the purpose of providing a combined machine I provide avise structure 21 con sisting of a stationary jaw 22 and movable 'aw 23 sliding on the extension 24 ofthe table. A feed screw L25 has engagement with the nut 26 mounted behind the extension` and a handle 27 is provided for turning the screw.

From the foregoing description it will bev seen that I provide a machine that may 'per-- form three or more functions in working upon pistons. It will also -be noted that the operation is such that the-bushings may be accurately removed and replaced thereby I Y preventing mutilation of the parts. I,

It is, of course,

other manners and the parts `associated yin different relations and, therefore, I do notV ported bythe table directlyy under the pas.l

sage, an extension on the table having a hole partly countersunk, a standard rotatably supported by thetab-le, a feed screw'mounted in the standard, and tools interchangeably connected to the feed screw for either a to be understood that the invention may be constructed -in 'various f forcing the bushings oneV at a time from I be piston thiough the passage yor fo insert bushings into the piston when supported by the extension.

2. A piston repair machine compising a table having a piston seat and a passage in communication therewith, a drawer, supported by the table diieotly under the passage, an extension on the table having a hole partly conntei'sunk, a standard rotaabiy supported by the table, ay feed screw mounted in the standard, and oois interchange-amy connected to the feed screw foi either foroing the busnings one af a. time from the piston through the passage or to iiifsmt 15 bushings into the piston when supported by ib@ extension, sai/Li standnigl'baving n stub Shaft rotatably mounted in the 'table and eiements foi' locking the shaftin a pre-determined position.

A piston repairing machine comprising table constructed to support a piston at standard swinglnglyv n testimonv whereof I aix m sienature.`

MART@ n. RoGNfsss.

operating means 

